Ladder



FIG. 1 is a perspective view of a ladder.

FIG. 2 is a front side view of the ladder of FIG. 1 .

FIG. 3 is a rear side view of the ladder of FIG. 1 .

FIG. 4 is a right side view of the ladder of FIG. 1 .

FIG. 5 is a left side view of the ladder of FIG. 1 .

FIG. 6 is a top side view of the ladder of FIG. 1 ; and,

FIG. 7 is a bottom side view of the ladder of FIG. 1 .

The broken lines in the figures are shown for the purpose of illustrating boundaries of the ladder and form no part of the claimed design. 

CLAIM The ornamental design for a ladder, as shown and described. 